Simple Regular Expression in PHP

tooparam · 03-09-2006, 12:02 PM

Dear

I want to remove every occurence of /* */ from a string. For example

aaaaaaaaa/*bbbbbbbbb*/ccccccc/*dddd*/eeeeeeeeee

should become

aaaaaaaaaccccccceeeeeeeeee

Can you provide me the necessary Regular Expression for that.

Thanks,
Paramvir

DanTaylor · 03-09-2006, 12:17 PM

I don't know about PHP, but in perl you would just do this:
[code]#If in file:
while(<>) {
if (m:/\*.*\*/

{
$fixed = $_;
$fixed =~ s:/\*::
print "$fixed\n";
}
}

schentor · 03-09-2006, 12:43 PM

This should work:

Code:

$output = preg_replace("/\/\*.*?\*\//", "", $str);

where $str is the original string and $output is the new string.

tooparam · 03-09-2006, 12:44 PM

Thanks for the reply.

I will try it and let you know the results.

airswit · 03-09-2006, 01:08 PM

i tried the following one, and it gives me a PHP error, so i'm not sure what is going on. the regex is /\*.*?\*/ , according to : http://www.regular-expressions.info/...rogrammer.html . the question mark is needed to make sure that it does not extend to the last *\, but you can read about it on the site i showed, under the 'comments' section

DanTaylor · 03-09-2006, 02:21 PM

Whoops looks like on my post it auto converted some of my code to a smily face - sorry - that should have been a colon )

vharishankar · 03-09-2006, 11:06 PM

There is a great reg exp builder in KDE. Very useful to build visually.

KRegExpEditor.

It's quite cool to build regular expressions without having to worry about the syntax but just thinking logically about what you want to match.

xhi · 03-09-2006, 11:22 PM

in perl somthing like this..

Code:

$line =~ s/\/\*.+?\*\///g;

edit> oops didnt see schentor's post.. it should work..